From: andrewfish <andrewfish@6f19259b-4bc3-4df7-8a09-765794883524>
Date: Thu, 11 Aug 2011 03:24:35 +0000 (+0000)
Subject: EmulatorPkg: Make the library work with DXE Core.
X-Git-Tag: edk2-stable201903~14414
X-Git-Url: https://git.proxmox.com/?p=mirror_edk2.git;a=commitdiff_plain;h=9184d5da2ff27a48f649ad4763021d06e335d1c5

EmulatorPkg: Make the library work with DXE Core.

The DXE core calls library constructors after it calls DEBUG macros, so we need more error handling in the lib.

signed-off-by: andrewfish



git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@12118 6f19259b-4bc3-4df7-8a09-765794883524
---

diff --git a/EmulatorPkg/Library/DxeEmuStdErrSerialPortLib/DxeEmuStdErrSerialPortLib.c b/EmulatorPkg/Library/DxeEmuStdErrSerialPortLib/DxeEmuStdErrSerialPortLib.c
index 8d95921c03..00d9f19369 100644
--- a/EmulatorPkg/Library/DxeEmuStdErrSerialPortLib/DxeEmuStdErrSerialPortLib.c
+++ b/EmulatorPkg/Library/DxeEmuStdErrSerialPortLib/DxeEmuStdErrSerialPortLib.c
@@ -66,6 +66,10 @@ SerialPortWrite (
   IN UINTN     NumberOfBytes
   )
 {
+  if (gEmuThunk == NULL) {
+    return NumberOfBytes;
+  }
+  
   return gEmuThunk->WriteStdErr (Buffer, NumberOfBytes);
 }